You dilate something when you make it bigger or wider. The eye in the picture is dilated.
To dine simply means to eat your main meal of the day, usually dinner.
It is most often used when you are talking about eating out at a restaurant.
A dip can be one of many things. As a verb, you dip something by lowering it briefly into a liquid, for example the person in the picture is dipping some bread. The semi-liquid food he is dipping the bread into is also called a dip. Dips are very tasty, can be made from virtually anything, and are usually served with some kind of bread. Many dips are made with a yoghurt base.
A dip is also a shallow dent or depression in the ground, often seen where a drain crosses a road.
Dis forDisappoint
You are disappointed when something you expected or wanted doesn't happen. People might get disappointed that the last slice of cake was taken before they got a chance to have some.
Dis forDisintegrate
Something disintegrates when it breaks down into the components it was made from, or just breaks into small pieces. The building in the picture is slowly disintegrating.
